@import '~antd/dist/antd.css';


.bgc {
    position: fixed;
    background-color: rgb(245, 245, 245);
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}


.cell{
    height: 30px;
    width: 30px;
    position: relative;
}

.row {
    position: absolute;
    width: 100%;
    top: 50%;
    border-top: 1px solid black;
}

.col {
    position: absolute;
    height: 100%;
    left: 50%;
    border-left: 1px solid black;
}

/*行的样式*/
.row-container{
    display: flex;
}

.checkerboard{
    display: flex;
    justify-content: center;
}

.ball{
    height: 60%;
    width: 60%;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    border: 1px solid black;
}